JavaScript Library & Framework
6,289 of the 1,000,000 top sites in our Tranco top-1M census run Underscore.js (0.6%). A utility JavaScript library providing functional helper methods for working with arrays, objects, and functions. Detection is homepage-level HTML/header fingerprinting, so a site can run Underscore.js on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | uk.com | #532 (Tranco) | Find emails |
| 2 | washington.edu | #773 (Tranco) | Find emails |
| 3 | eu.com | #891 (Tranco) | Find emails |
| 4 | us.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| emanuelnyc.org | #996,493 | Backbone.js, Cloudflare, Cloudflare Bot Management + 14 more | Find emails |
| mecoeg.com | #996,619 | Bootstrap, Font Awesome, Google Fonts + 7 more | Find emails |
| rutadelacera.es | #996,707 | Font Awesome, Google Analytics, Google Fonts + 8 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| ernestobraghero.com | #996,813 | Let's Encrypt, LiteSpeed, WordPress + 1 more | Find emails |
| aiga.com | #996,842 | Amazon Route 53, Amazon S3, Branch + 9 more | Find emails |
| 777blog.hu | #997,007 | DoubleClick (Google Ads), Fancybox, Font Awesome + 9 more | Find emails |
| irontemplates.com | #997,033 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| emergingminds.com.au | #997,042 | AOS, Cloudflare, Cloudflare edge/CDN + 15 more | Find emails |
| lakotatimes.com | #997,140 | AddToAny, All in One SEO, Apache + 11 more | Find emails |
| wabsuk.co.uk | #997,150 | Bootstrap, Font Awesome, Google Fonts + 4 more | Find emails |
| aazperfumes.com.br | #997,158 | Amazon CloudFront, Bootstrap, Font Awesome + 8 more | Find emails |
| voipmuch.com | #997,227 | ASP.NET, Azure DNS, DigiCert + 5 more | Find emails |
| paran.no | #997,341 | Apache, Font Awesome, Google AdSense + 6 more | Find emails |
| marathon.nl | #997,367 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| virtualnet.ro | #997,425 | Apache, Bootstrap, Font Awesome + 8 more | Find emails |
| svit-vikon.shop | #997,480 | Fancybox, Font Awesome, Google Fonts + 10 more | Find emails |
| worldwidesteelbuildings.com | #997,512 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 11 more | Find emails |
| cig.gov.pt | #997,547 | AddToAny, Feedburner, Font Awesome + 10 more | Find emails |
| mpyit.com | #997,730 | 51.la, Baidu Analytics, Cloudflare + 6 more | Find emails |
| ypojie.com | #997,790 | Baidu Analytics, Cloudflare, Cloudflare Turnstile + 5 more | Find emails |
| thebinaryfamily.com | #997,913 | Apache, Font Awesome, Google Fonts + 6 more | Find emails |
| americamakes.us | #998,005 | All in One SEO, Backbone.js, Cloudflare + 11 more | Find emails |
| paikltd.com | #998,091 | Apache, Bootstrap, Fancybox + 7 more | Find emails |
| economy-pedia.com | #998,200 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| kidztopia.com | #998,206 | Fancybox, Font Awesome, Google Analytics + 15 more | Find emails |
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →